Gas PipingQuestion 232 of 360
Corrugated stainless steel tubing (CSST) gas systems have an important electrical requirement. What is it?
a.It must be painted red
b.It must be pressurized to 25 psi
c.It must be electrically bonded, commonly with a jumper of at least No. 6 AWG copper
d.It must be filled with inert gas
Explanation
CSST is thin-wall tubing that can be damaged by an electrical arc from a nearby lightning strike, so the manufacturer and code require it to be bonded to the electrical grounding system. Bonding is commonly done with a clamp on the rigid pipe or CSST fitting and a jumper of at least No. 6 AWG copper. Always follow the CSST manufacturer's listed bonding instructions.
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